Buggy code:
public class ClassLoaderWeavingAdaptor extends WeavingAdaptor { private static final String AOP_XML = "META-INF//aop.xml" ; private boolean initialized ; private List m_dumpTypePattern = new ArrayList ( ) ; private boolean m_dumpBefore = false ; private List m_includeTypePattern = new ArrayList ( ) ; private List m_excludeTypePattern = new ArrayList ( ) ; private List m_includeStartsWith = new ArrayList ( ) ; private List m_excludeStartsWith = new ArrayList ( ) ; private List m_aspectExcludeTypePattern = new ArrayList ( ) ; private List m_aspectExcludeStartsWith = new ArrayList ( ) ; private List m_aspectIncludeTypePattern = new ArrayList ( ) ; private List m_aspectIncludeStartsWith = new ArrayList ( ) ; private StringBuffer namespace ; private IWeavingContext weavingContext ; private static Trace trace = TraceFactory . getTraceFactory ( ) . getTrace ( ClassLoaderWeavingAdaptor . class ) ; public ClassLoaderWeavingAdaptor ( ) { } public ClassLoaderWeavingAdaptor ( final ClassLoader deprecatedLoader , final IWeavingContext deprecatedContext ) { } protected void initialize ( final ClassLoader classLoader , IWeavingContext context ) { } private List parseDefinitions ( final ClassLoader loader ) { } private void registerDefinitions ( final BcelWeaver weaver , final ClassLoader loader , List definitions ) { } private String getClassLoaderName ( ClassLoader loader ) { } private void registerOptions ( final BcelWeaver weaver , final ClassLoader loader , final List definitions ) { } private void registerAspectExclude ( final BcelWeaver weaver , final ClassLoader loader , final List definitions ) { } private void registerAspectInclude ( final BcelWeaver weaver , final ClassLoader loader , final List definitions ) { } protected void lint ( String name , String [ ] infos ) { } public String getContextId ( ) { } private void registerAspects ( final BcelWeaver weaver , final ClassLoader loader , final List definitions ) { } private void registerIncludeExclude ( final BcelWeaver weaver , final ClassLoader loader , final List definitions ) { } private String looksLikeStartsWith ( String typePattern ) { } private void registerDump ( final BcelWeaver weaver , final ClassLoader loader , final List definitions ) { } protected boolean accept ( String className , byte [ ] bytes ) { } private boolean acceptAspect ( String aspectClassName ) { } protected boolean shouldDump ( String className , boolean before ) { } public String getNamespace ( ) { } public boolean generatedClassesExistFor ( String className ) { } public void flushGeneratedClasses ( ) { } private void defineClass ( ClassLoader loader , String name , byte [ ] bytes ) { if ( ClassLoaderWeavingAdaptor . trace . isTraceEnabled ( ) ) ClassLoaderWeavingAdaptor . trace . enter ( "defineClass" , this , new Object [ ] { loader , name , bytes } ) ; Object clazz = null ; <START_BUG> info ( ( ( "generating<seq2seq4repair_space>class<seq2seq4repair_space>'" + name ) + "'" ) ) ; <END_BUG> try { Method defineClass = ClassLoader . class . getDeclaredMethod ( "defineClass" , new Class [ ] { String . class , bytes . getClass ( ) , int . class , int . class } ) ; defineClass . setAccessible ( true ) ; clazz = defineClass . invoke ( loader , new Object [ ] { name , bytes , new Integer ( 0 ) , new Integer ( bytes . length ) } ) ; } catch ( InvocationTargetException e ) { if ( ( e . getTargetException ( ) ) instanceof LinkageError ) { warn ( "define<seq2seq4repair_space>generated<seq2seq4repair_space>class<seq2seq4repair_space>failed" , e . getTargetException ( ) ) ; } else { warn ( "define<seq2seq4repair_space>generated<seq2seq4repair_space>class<seq2seq4repair_space>failed" , e . getTargetException ( ) ) ; } } catch ( Exception e ) { warn ( "define<seq2seq4repair_space>generated<seq2seq4repair_space>class<seq2seq4repair_space>failed" , e ) ; } if ( ClassLoaderWeavingAdaptor . trace . isTraceEnabled ( ) ) ClassLoaderWeavingAdaptor . trace . exit ( "defineClass" , clazz ) ; } }

Fix:
debug ( ( ( "generating<seq2seq4repair_space>class<seq2seq4repair_space>'" + name ) + "'" ) ) ;